US 12,177,001 B2
Method and device for modulating with Zadoff-Chu sequences
Jean Canonici, Cannes (FR)
Assigned to TERNWAVES, Cannes (FR)
Filed by TERNWAVES, Cannes (FR)
Filed on Oct. 10, 2023, as Appl. No. 18/483,820.
Application 18/483,820 is a continuation of application No. 17/433,637, granted, now 11,817,942, previously published as PCT/FR2020/050345, filed on Feb. 24, 2020.
Claims priority of application No. 1902035 (FR), filed on Feb. 27, 2019.
Prior Publication US 2024/0121021 A1, Apr. 11, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. H04J 13/00 (2011.01)
CPC H04J 13/0062 (2013.01) [H04J 13/0074 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A method for modulating a plurality of K-ary symbols to be transmitted over a transmission channel, wherein each K-ary symbol is transformed into a Zadoff-Chu sequence associated with this symbol, said Zadoff-Chu sequence being of length N, root r and frequency offset q where N is a positive integer such that log2 N≥K, r is an integer such that r >1 and prime to N, q is a relative integer, and that any two K-ary symbols of said plurality are associated with Zadoff-Chu sequences having distinct frequency offsets, each K-ary symbol being modulated in the form of a sequence, of length greater than or equal to 2K, of consecutive complex elements of the Zadoff-Chu sequence associated with said K-ary symbol,
wherein the distinct frequency offsets for the Zadoff-Chu sequence are assigned distinctively for a successive transmission of respective distinct K-ary symbols on the transmission channel.